The line represent the relationship between the number of words tien can type and the amount of time in minutes.

the ordered paired is (1, 20) represents the unit rate because for a unit rate it is the smallest rate. 1 minute is the smallest rate, meaning this person can type 20 words in 1 minute. If you want to know how long does this person take if they typed 600 words, you know that it takes 20 words for 1 minute.

this goes along with the second part. (3, 120) this person can type 120 words in 3 minutes. You see the 3 is on the x-axis and that says time in minutes. the 120 is the y value and on the graph it says words typed.

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752